Comparison

PocketBook Reader vs Calibre Connector

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

PocketBook Reader

This app is a versatile reader supporting 26 book and audio formats, including EPUB, PDF, and audiobooks. It offers features like PDF reflow, text-to-speech, cloud synchronization, and extensive customization options for a comfortable reading experience.

Highlights
  • Supports 26 book and audio formats
  • PDF Reflow function
  • Text-to-speech engine
  • Cloud synchronization service
  • Customizable interface and reading settings
  • Adobe DRM support
Features
Currently charting
Read full description

PocketBook Reader is a free app for reading all formats (books, magazines, textbooks, comic books, etc.) and listening to audiobooks! The application supports 26 book and audio formats, including mobi, epub, fb2, cbz, cbr. Read without ads and with total comfort! Choose any content - any format! • Support of 19 book formats, including the most popular - EPUB, FB2, MOBI, PDF, DJVU, DOCX, RTF, TXT, HTML; • Comic book formats CBR and CBZ; • Open books protected with Adobe DRM (PDF, EPUB); • PDF Reflow function (reflow text in PDF files). Listen to audiobooks! • You can listen to audiobooks and other audio files in MP3, M4B, and take notes in them; • Built-in TTS (Text-to-speech) engine for the voicing of the text files. Download and sync content easily! • Free PocketBook Cloud service for synchronizing all your books, including audiobooks, as well as reading positions, notes and bookmarks on all your devices; • Your files from Dropbox or Google Books services are easily connected to the app to create one consolidated library. You can even connect multiple accounts at the same time; • Support for OPDS catalogs - get access to network libraries; • ISBN scanner, for quick search of electronic versions of books by barcode; • Opportunity to borrow books and periodicals; • If you have a E Ink e-reader PocketBook, you can easily synchronize all your books and accounts just by scanning a QR code. Ready to switch from another app? No problem! Getting started with PocketBook Reader is easy! With an intuitive interface, the application provides you with unprecedented freedom – lots of options for settings and no restrictions. Choose, change, customize, and personalize! • Intuitive interface, easy navigation, and minimalistic design; • Opportunity to choose one of the seven interface color themes, reassign the buttons and display areas; • Two night-reading modes - for better reading comfort anytime; • Adjust the font style, font size, line spacing, and margin size; • Animation of turning pages; • Opportunity to crop margins – make the page look exactly the way you want. Get fast file access and easy search! • All files are quickly found and instantly opened, even with built-in audio and video fragments; • Your books will never be lost in the device’s memory - thanks to the smart search, scanning files on your tablet or smartphone is a matter of seconds. Any file or document can be found in a few clicks! • The app allows you to sort books, create collections, filter and mark files as you like. Your library - your rules; • Convenient managing of audio files - it is easy to sort and play your audiobooks. Make bookmarks, take notes, add comments! • You can quickly find all your notes and share them with friends via email or messengers; • Collect all your notes, bookmarks, and comments into separate files for even greater convenience. PocketBook Reader was created by avid readers for avid readers, and that’s why it’s probably the best e-book reader app.

About

Calibre Connector

This application facilitates the transfer of book information from the Calibre software to your Apple device. It enables easy access to your digital library on the go.

Highlights
  • Download Calibre information
  • Sync to iDevice
  • Access digital library
  • Supports iPhone and iPad
Features
Read full description

This app allows the user to download the information from calibre to their iDevice.

Screenshots

PocketBook Reader4 screens
Calibre Connector1 screens

Verdict

The call

The clearest difference is rating: PocketBook Reader at 4.5 against Calibre Connector's 2.4. PocketBook Reader also leads on review sentiment (54% vs 23%) and ratings volume (9.8K vs 13). Calibre Connector's advantage is in-app purchases (none vs 56) and update cadence (every 4 days vs every 2 months). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. PocketBook Reader sells 41 one-off in-app purchases. Calibre Connector asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

PocketBook Reader holds the better App Store score, 4.5 against 2.4. That said, the two scores are not equally well evidenced: PocketBook Reader has 9.8K ratings behind it against 13, so its average is the more settled of the two. Written reviews point the same way: 54% of PocketBook Reader's written reviews are positive against 23% of Calibre Connector's.

UpkeepUpdate frequency

PocketBook Reader ships an update every 2 months, Calibre Connector every 4 days. The most recent releases landed on September 24, 2026 and September 7, 2026 respectively.

Scorecard8 real differences · 3 level
PocketBook Reader versus Calibre Connector: the parameters behind the verdict, then further details
ParameterPocketBook ReaderCalibre Connector
PriceFreeFree
Rating4.5 (9.8K ratings) — better2.4 (13 ratings)
Positive reviews54.5% of reviews — better23.1% of reviews
Number of ratings9.8K — better13
Update frequencyEvery 2 monthsEvery 4 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
Best chart rank#161 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.2
Further details — not scored
Size106 MB3 MB
Age rating9+4+
DeveloperPocketbook International SAPhillip Walker

Customer experience

PocketBook Reader

All ratings9,831 ratings
Positive87.4%
Neutral3.9%
Negative8.7%
Written reviews1,336 reviews
Positive54.5%
Neutral11.8%
Negative33.8%

Calibre Connector

All ratings13 ratings
Positive38.5%
Neutral0.0%
Negative61.5%
Written reviews13 reviews
Positive23.1%
Neutral7.7%
Negative69.2%

Bugs and requests

PocketBook Reader

Reported bugs

4 issues
  • Books disappearing from library after login issues
  • Inability to open DRM-protected PDFs
  • Inconsistent behavior when switching between portrait and landscape modes
  • Text-to-speech voice quality issues

Requested features

5 requests
  • Ability to organize books into custom folders
  • Option to disable quick action zones
  • Improved text-to-speech controls (seek, pause, etc.)
  • Support for handwritten annotations with Apple Pencil
  • Faster page turning and scrolling

Calibre Connector

Not enough reviews yet to summarise bugs or requests.

In-app purchases

41 purchases

PocketBook Reader

One-time41
  • eBook3 variants$0.99
  • eBook (class A)$0.99
  • eBook2 variants$1.99
Show 38 more
  • eBook (class B)$1.99
  • eBook$2.95
  • eBook2 variants$2.99
  • eBook (class C)$2.99
  • eBook3 variants$3.99
  • eBook: type 4.79$3.99
  • eBook: type 4.19$3.99
  • eBook (class D)$3.99
  • eBook (class Alt5)$4.99
  • eBook: type 5.39$4.99
  • eBook (class F)$4.99
  • eBook: type 5.89$4.99
  • eBook$4.99
  • eBook: type 5.09$4.99
  • eBook (class G)$5.99
  • eBook2 variants$5.99
  • eBook: type 7.09$5.99
  • eBook: type 7.19$5.99
  • eBook: type 8.29$6.99
  • eBook: type 7.59$6.99
  • eBook3 variants$7.99
  • eBook: type 8.89$7.99
  • eBook (class J)$8.99
  • eBook$8.99
  • eBook$9.90
  • eBook2 variants$9.99
  • eBook (class L)$10.99
  • eBook: type 13.9$11.90
  • eBook$11.99
  • eBook: type 12.99$11.99
  • eBook$12.99
  • eBook (class N)$12.99
  • eBook (class O)$13.99
  • eBook: type 17.9$14.90
  • eBook$14.99
  • eBook (class R)$16.99
  • eBook (class T)$18.99
  • eBook (class W)$21.99
None

Calibre Connector

No in-app purchases

Questions

Is PocketBook Reader free?
PocketBook Reader is free to download, with in-app purchases available.
Is Calibre Connector free?
Calibre Connector is free to download, with no in-app purchases.
Which has better reviews, PocketBook Reader or Calibre Connector?
PocketBook Reader is rated higher. PocketBook Reader averages 4.5 out of 5 from 9.8K ratings, while Calibre Connector averages 2.4 from 13 ratings.
Do PocketBook Reader or Calibre Connector have ads?
Neither PocketBook Reader nor Calibre Connector shows ads.
Which is updated more often, PocketBook Reader or Calibre Connector?
PocketBook Reader ships an update every 2 months, and Calibre Connector every 4 days. Most recently, PocketBook Reader was updated on September 24, 2026 and Calibre Connector on September 7, 2026.

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